🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION β†’
Log in
Biology
21
answers
0
watching
717
views
5 Jan 2018

Cytokinins

(a) promote abscission

(b) influence water movement

(c) photoperiod less than 12 hours photoperiod below a critical length and uninterrupted long night long night

(d) short photoperiod and interrupted long night.

Watch
21
answers
0
watching
717
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share
19 Mar 2022
Already have an account? Log in
Share
Avatar image
Read by 1 person
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

Explain your answers, please.

Fire is a common occurrence in prairie grasslands. What do you think would happen to a grassland area if fire were excluded for many decades?

A. some trees would slowly begin to appear.
B. there would be no change.
C. it would become a desert.

D. it would slowly turn into a tropical rainforest

If you examine plant life in a very arid place like deathvalley, you may find some herbaceous desert plants that do not have any anatomical features for water conservation. How would you expect this as someone who has studied botany?

A. they absorb moisture from the atmosphere during night
B. they can grow with very little available water.
C. they can exist and grow for long periods on stored water.
D. they complete life cycle within the short time there is sufficient moisture.

E. they use crassulacean acid metabolism pathway

Which of the following is a difference between a prairie grassland and a savanna grassland?

A. Prairie soils are rich in nutrients
B. Savannas have provided some of the most productive agricultural lands.
C. Prairies support an immense population of animals.
D. Savannas have scattered tall trees

Case study:

Kathleen is a 5'6", 130-pound, 20-year-old college junior. Over the last few years she has gained and

then lost ten to fifteen pounds several times. Recently she has been trying hard to keep her weight down.

Like many college students, Kathleen goes out every weekend and tends to overindulge. During the week

she lives the life of a serious student, eating very little and getting 7-8 hours of sleep every night. By

Friday she is ready to have some fun. She usually goes out with friends to a nearby burger or taco shop

and then finds a party. At the party Kathleen will have four or five drinks and munch on chips or pretzels.

By 3 a.m., when she and her friends are ready to call it a night, they usually are hungry again. This

means finding pizza, waffles, or any other food they can find at that hour of the morning. After a late night

out, Saturdays are spent catching up on some sorely needed sleep. By Saturday night she is ready to go

out and do it all over again. Sundays are usually spent relaxing at a hearty Sunday brunch, watching

movies with her friends accompanied by a giant bowl of popcorn, and finishing homework that's due

Monday morning.

Kathleen realizes that her weekend binges may cause her to gain weight, so she cuts way down on

calories Monday through Thursday. Kathleen has been trying to stay active and build up some muscle

mass by running. Recently, her strict dieting is making this more difficult. During the week Kathleen eats

so little that she often feels weak or lightheaded, especially following her long-distance runs. Although she

is running a great deal, her muscles are not getting as large as she had hoped. On Mondays and

Tuesdays her diet is very hard to stick to. Kathleen is always starving. However, by the end of the week

she no longer feels so hungry. Kathleen also notices that she has a much harder time paying attention, is

sensitive to the cold temperatures, and finds it all too easy to catch a cold or flu.

For a while she was able to overcome this and still go out on the weekends, but she is starting to feel that

it is not worth being so miserable during the week, no matter how much fun her weekends may be.

Kathleen knows she is putting her body through a lot of stress, but needs someone to explain what is

happening as she experiences the consequences of a weekly roller coaster ride from feasting to fasting.

Answer the following as a RDN

1. a) Over the weekend, I eat a lot of more food compared to the weekdays. How does my body

handle all of that extra calories? (Discuss the body's reaction to excess carbohydrate, protein,

and fat.)

b.) On the weekends, I like to go out drinking with my friends. Is that really going to affect my

health? (1. Explain alcohol's effects on the liver, both short term and long term 2. Explain the

long-term consequences of Kathleen's eating pattern and alcohol consumption on her vitamin

status )

c.) During the week when I donҀ™t eat a lot, what is my body running on for fuel? (During periods

of fasting, how are metabolic fuels used differently compared to their use with a healthy,

consistent diet? Describe some of the negative effects associated with this.)

d.) How is this fuel different when I am eating a lot over the weekend? (During periods of

feasting, how are metabolic fuels used differently compared to their use with a healthy,

consistent diet?)

In a population of small homeotherms (endotherms), a mutation arises that results in the inner mitochondrial membrane having fewer folds(see page 3). A scientist measures the total length of the membrane within 10 members each of the two different types of animals. He finds that in the less folded membrane (animal type LF) the length is at about one-third that of the more folded membrane (animal type MF).

Based on the above finding he would correctly predict which one of the following? Top of Form

a) Animal type LF is capable of producing more ATP than animal type MF
b) Animal type MF is capable of producing more ATP than animal type LF.
c) There is no difference in the amount of ATP produced by the 2 types of animals.
d) Glycolysis does not occur in animal type LF.
e) Glycolysis does not occur in animal type MF.

Which of the following observations provide the best evidence for the Endosymbiotic Theory of the origin of Eukaryotes?

a) Most bacteria are much larger than mitochondria and chloroplasts.

b) Prokaryotes, mitochondria, and chloroplasts all have cell walls.

c) Prokaryotes, mitochondria, and chloroplasts all have DNA and ribosomes.

d) Prokaryotes, mitochondria, and chloroplasts cannot reproduce themselves.

e) Prokaryotes, mitochondria, and chloroplasts are not surrounded by membranes.

Boomer Lake with _______ nitrate and phosphate concentrations would be likely to have a lower concentration of dissolved oxygen during the __________.

a) high; day

b) high; night

c) low; day

d) low; night

In a particular population of 100 prairie dogs living in 100 acres, growth rate (r) = 0.1 prairie dogs/prairie dog/year.

[14] For this population, what is a possible combination of b and d?

a) b = 200 births/100 individuals/year and d = 190 deaths/100 individuals/year

b) b = 200 births/100 individuals/year and d = 200 deaths/100 individuals/year

c) b = 190 births/100 individuals/year and d = 200 deaths/100 individuals/year

d) b = 500 births/100 individuals/year and d = 400 deaths/100 individuals/year

e) none of the above are correct

After learning all she could about ant hills our researcher decided to conduct some population surveys of the ants in her research area. She recorded the following results for a 2 acre plot over a period of 3 years:

Beginning of year # # ants

1 500

2 600

3 720

What would the expected ant population size (N) be at the end of the 3rd year (beginning of the 4th year)? Γ―Βƒ answer: _____ants

a) 144 b) 744 c) 840 d) 864 e)1320

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in